diff --git a/test/protox/json_encode_test.exs b/test/protox/json_encode_test.exs
index 3c21893..0d1fed9 100644
--- a/test/protox/json_encode_test.exs
+++ b/test/protox/json_encode_test.exs
@@ -1,5 +1,5 @@
 defmodule Protox.JsonEncodeTest do
-  use ExUnit.Case, async: false
+  use ExUnit.Case
   use Protox.Float
 
   @sucess_tests [